AutoCodes – MINI – P1351 MINI

P1351 MINI Code - Misfire Cylinder 5 With Fuel Cut-Off

Quick Answer

As part of the CARB/OBD regulations, the Engine Control Module (ECM) must determine if a misfire is occurring and also identify the specific cylinder(s) and the severity of the misfire event and whether it is emissions relevant or catalyst damaging. Common causes include Faulty Spark Plug, Faulty Ignition Coil, Intake vacuum leak. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1351 MINI indicates Misfire Cylinder 5 With Fuel Cut-Off.
Common causes: Common causes include Faulty Spark Plug, Faulty Ignition Coil, Intake vacuum leak.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,745

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1351 MINI Description

As part of the CARB/OBD regulations, the Engine Control Module (ECM) must determine if a misfire is occurring and also identify the specific cylinder(s) and the severity of the misfire event and whether it is emissions relevant or catalyst damaging. In order to accomplish these tasks, the control module monitors the crankshaft for acceleration losses during firing segments of each cylinder based on firing order.
The misfire/engine roughness calculation is derived from the differences in the period duration (T) of individual increment gear segments. Each segment period consists of an angular range of 120Â° crank angle that starts 78Â° before Top Dead Center (TDC).
If the expected period duration is greater than the permissible value a misfire fault for the particular cylinder is stored in the fault memory of the ECM. Depending on the level of misfire rate measured the control unit will illuminate the "Service Engine Soon" light, may cutoff fuel to the particular cylinder and may switch lambda operation to open-loop. All misfire faults are weighted to determine if the misfire is emissions relevant or catalyst damaging.

OBDII Code P1351 MINI - Misfire Cylinder 5 With Fuel Cut-Off - AutoCodes.com — P1351 MINI Code - Misfire Cylinder 5 With Fuel Cut-Off

What does this mean?

What are the Possible Causes of the DTC P1351 MINI?

Faulty Spark Plug
Faulty Ignition Coil
Intake vacuum leak
Faulty Camshaft Position Sensor
Ignition Coil harness is open or shorted
Ignition Coil circuit poor electrical connection

How to Fix the DTC P1351 MINI?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1351 MINI code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1351 MINI Code

What does the OBDII code P1351 mean on a MINI?

P1351 indicates a misfire has been detected in cylinder 5, and the engine control module has cut off fuel to that cylinder to prevent further damage.

What are the common symptoms of code P1351 on a MINI?

Symptoms may include rough engine idle, reduced power, poor acceleration, increased fuel consumption, and the check engine light illuminating.

What causes code P1351 on a MINI?

Common causes include a faulty ignition coil, damaged spark plug, wiring issues, clogged fuel injector, or low cylinder compression.

Can driving with code P1351 cause damage to my MINI?

Yes, driving with a misfire can lead to engine damage, increased emissions, and potential catalytic converter failure. Prompt diagnosis and repair are recommended.

How can I diagnose P1351 on a MINI?

Start by inspecting the spark plug and ignition coil for cylinder 5, checking for wiring damage or loose connections, and testing the fuel injector for proper function.

Do I need special tools to fix code P1351 on a MINI?

Basic tools like a multimeter, spark plug socket, and diagnostic scanner are often sufficient, but specialized equipment may be needed for advanced tests like compression checks.

Can a dirty fuel injector cause code P1351 on a MINI?

Yes, a clogged or malfunctioning fuel injector can disrupt fuel delivery to cylinder 5, triggering a misfire and the P1351 code.

What should I check first when troubleshooting P1351 on a MINI?

Begin by inspecting the spark plug and ignition coil for cylinder 5, as these components are common culprits for misfires.

How much does it cost to repair code P1351 on a MINI?

Repair costs vary depending on the issue but may range from $50 for a spark plug replacement to several hundred dollars for ignition coil or injector repairs.

Can a software update fix P1351 on a MINI?

In rare cases, a software update may resolve issues related to engine misfire detection, but physical component inspection and repair are usually required.